Dinosaur Train embraces and celebrates the fascination that preschoolers have with both dinosaurs and trains while sparking an interest in life science natural history and paleontology. Dinosaur Train - Dinosaurs A to Z includes: The Call of the Wild Corythosaurus Fast Friends One Smart Dinosaur Have You Heard About the Herd? Dinoas A to Z Part 1 The Big Idea Part 2 Spread the Word Part 3 Classification Part 4 A to Z Picnic.